On Fri, Apr 25, 2025 at 9:38 PM home user via users <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
(Fedora-42; stand-alone workstation)
This is a totally new Fedora install on a stand-alone workstation, done
today. It is not a part of a LAN or WAN or any other home or office
network.
Please describe how the system is connected to the internet. Does your system get an IPv4 address
or IPv6?
It is not dual-boot.
I do need for Firefox, Thunderbird, and dnf to be able to interact with
the "outside world" appropriately. I do occasionally need to be able to
download or upload things.
Beyond those (and maybe other appropriate things that don't at the
moment come to mind), I do not want anyone or anything to be able to get
into this workstation. For example, no "ssh", "scp", "rlogin".
I gather from the Fedora docs that I should use firewalld or
firewalld-config. I have both. But Fedora docs does not give me enough
detail. I am not an IT professional. What specifically should I do to
keep unwanted people and things out?
Many "home" internet connection hardware does network address translation (NAT) to a non-routable
address used by attached devices <https://en.wikipedia.org/wiki/Network_address_translation>.
Vendors support NAT because it allows one IPv4 address to be used by all the devices on each
customer network, but it also prevents external sites from connecting to the devices on the
customer network.
use multiple external sites for elements of the page you see. There is always a risk that one of these
sites has been hacked and is serving malware or stealing personal information. Firefox on Fedora
includes some measures to block or mitigate such attacks.
George N. White III
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